Refrigerating apparatus



July/'28, 1931. 'HGJANCSY 1,816,585

' REFRIGEHATING APPARATUS Fl'ed'ApIil 2, 1929 Patented July 2s, 1931 l y 1,816,585

miren simu-2s PATENT ermee HENRY@ JANCS'Y, 0F EVERETT, MASSACHUSETTS REFRIGERATING APPARATUS rApplication filed Apri1.2, 19,29. Serial No. 352,006.

The invention relates to a refrigerating compartment 2 in which 'tl-ie articles to be or cooling apparatus especially adapted for kept cold are placed. ljo'cated y"vsithin `the insta lation in a truck or wagon for Vkeeptop ofthe insulated casingisatank 3 capaing properly cool articles therein during ble lof'containing arelatively large body of l transportation, such as ice cream. 1 liquid refrigerant. y AThe 'tank 'is supported 5 The apparatus is `essentially an iinproveby crossbars 4 connected to the vc'asingand nient over that shown and described in my onwhich the Atank rests. Associated with cto-pending application now Patent No. the :tank 3 and locatedfin the lower portion 1,722,578@ July 30, 1929, in which thetruc'k of the insulated casing resting 'on thebottom or wagon is quipped with a cooling unit thereof and occupying a I position in sur @o uding a tanlrcontaining a considerable rounding relation to larticles.placed in the bodyofrefrigerant and coupled to the tank compartment 2, is a cooling fixture 'preferer a Vhollow cooling liXture into Vand through ably in the form of anu'inber of hollow which the refrigerant'will circulate from the metal plates 5. These hollow-plates are con-l l tank by theiniosiphonic action. `With tl'ie nected lat'the top and bott'oinrespectively 'by ou truck or wagon thusequipped a refrigerant pipe connections ``'6. lExtending from the y from an outside source and cooled by any bottom of the ltank 3 is a'pipe connection 7 t, pe refrigerating machine is circulated which extends into the interior of -o'neof 'through the cooling unit until such vtime as the hollow plates preferably to a point Well it and the walls of the insulated compartdown inside it terminating at a point vre- 'J0 nient, within which it is shown contained,V moved from thebottom of thefplate. EX- are thoroughly chilled lafter which the entending from the top of one ofthe hollow forced circulation of the .refrigerant :is plates, and preferably oney o'f the'plates stopped and the cooling unit left filled with other than that into which'the pipe connectlie cold refrigerant, and afterward circution 7 is extended, is a pipe connection 8 I5 lation of the refrigerant will continue which connects With the `side of the .tank throughout the unit when the temperature below its top, leaving a space between the in the fixture exceeds that of the tank, in point Where this connection enters the vtank accordance with the principles of thermoand the top wall of the tank. Extending siphonie circulation to which the parts are. from the side of the tank through the casing so made adaptable. is a pipe connectionr9having a valve 10 in Thile the method and apparatus deit. Extending from theside of one ofthe scribed in my said application are eiiicient hollow plates is a pipe'connection 11 havfor cooling purposes and will remain effiing' a valve 12 in it. VVith acooling unit cient for a protractedperiod oftiine even thus arranged and equipped, pipe connec- 854 under adverse conditions, the purpose of tions leading Vfrom any suitable apparatus the present invention is essentially to iinare temporarily coupled onto the-pipe conprove upon it by lengthening the time nections `9 and 1l respectively and, the through which the efficiency of the appav-alves 10 and 12 being opened, a liquidre- 40 ratus be maintained. frigerant-is circulated through the tank and 90 The invention can best be seen and underfixture beneath it until the refrigerant has stood by reference to the drawing, in reached the desired low temperature, and Whghalso untilthecooling unit and walls of the The figure is a cross section of the appainsulated casing within which it is contained ratus or such portion thereof as is necesarepthoroug'hly cool orcooled to the low 95 sary for a proper understanding of the intemperature of the refrigerant circulated vention. through the unit. This'having been accoml represents the insulated casing on the plished, the temporary connections made truck er wagon which surrounds the cooling with the pipes 9 and 11 for circulating the unit and within which is, also, contained the refrigerant are-removed, and the valves 10 ree.

. cially good.

yimproveV upon the apparatus thus erant in the auxiliary and l2 closed, leaving the cooling unit filled with the refrigerant. Thereupon the contained refrigerant in the tank and cooling fixture will circulate by thermosiphonic action keeping cold the compartment 2 in which the articles to be kept cold are placed.

The various parts thus far described and their operation are substantially like that referred to in my said patent to which reference is hereby made for a more detailed description. As described, also, in said patent, any well known liquid refrigerant may be used of which a refrigerant composed of equal parts of alcohol and water is espe- In other words, a refrigerant is employed which will maintain its fluid state even at a low temperature approaching or below the zero point in order that the circulation of the fluid may be maintained. The purpose of the present inventionis to l far described by lengthening the time in which its cooling efficiency may be maintained. VThis is accomplished by placing an auxiliary closed tank or cell 13 within the tank 3 oi' main tank. Contained within the auxiliary vtank is a liquidV capable of being frozen by the liquid refrigerant passed through the main tank, This liquid may be water or it may be a liquid refrigerant which is capable of being frozen at a higher temperature than that at which the refrigerant in the main tank would become frozen.

The advantage of thus providing an icecontaining tank or cell in the main tankis that an appreciable gain is obtained lin the length of time that the refrigerant in the main tank and cooling fixture associated with it will be kept cold for the reason that it will take 144 British thermal units to melt one pound of ice where' it takes but one British thermal unit to raise one pound of water one degree.

Instead of freezing the liquid or refrigtank by the refrigerant passed through the main tank, the vfreezing of the liquid or refrigerant in the auxiliary tank may afcoil or pipe through the auxiliary tank with ends 16 extending outside the insulated casing with valves 17 in them. To these ends thus extending connections may be made with any suitable refrigerating vapparatus and, on opening the valves, a refrigerant may be passed through the coil, freezing the liquid in the auxiliary tank. With a coil in the auxiliary tank a refrigerant may be passed through the coil at the same time that it is being passed through the main tank, thus diminishing the time it would take to freeze the contained liquid in the auxiliary tank. As said before, however, I prefer to dispense with the coil in the auxiliary tank and to freeze the liquid be obtained by ruiming therein only by the passage of the refrigerant through the main tank.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. A cooling apparatus comprising an insulated casing having within it a cooling compartment, a cooling fixture arranged inside the casing in cooling relation to said compartment, a main tank for containing a body of refrigerant located within the casing above said fixture, pipe connections between the main tank and the cooling fixture whereby a thermosiplionic circulation will be established between the tank and fixture for refrigerant contained therein, an auxiliary tank located within the main tank, a liquid in the auxiliary tank freezable by a refrigerant circulated through the main tank, and valve-controlled connections leading from the main tank and cooling fixtures respectively with extension through the insulated casing whereby a refrigerant may be circulated through said main tank and cooling fixture from a point outside said casing to freeze the liquid in the auxiliary tank and afterward be left in the main tank and cooling` fixture to circulate therein by therinosiphonic action as aforesaid. i

2. A cooling apparatus comprising an insulated casing having within it a cooling compartment, a cooling fixture arranged inside the casing in cooling relation to said compartment, a main tank for containing a body of refrigerant located within the casing above said fixture, pipe connections 'between the main tank and the cooling fixture whereby a thermosiphonic circulation will be established between the tank and fixture for refrigerant contained therein, an auxiliary tank located within the main tank, a liquid within the auxiliary tank freezable by a refrigerant passed through it, valvecontrolled means leading froni outside the insulated casing with extension through the liquid in the auxiliary tank whereby a refrigerant may be passed through it for freezing said liquid, and valve-controlled connections leading from the tankand cooling fixture respectively with extension through the insulated casing whereby a refrigerant may be circulated through said main tank and cooling fixture from a point outside said casing assisting in freezing the liquid in'the auxiliary tank and afterward the refrigerant be left in the main tank and cooling fixture to circulate therein by thermosiphonic action as aforesaid.

HENRY Gr. JANGSY. 

